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The key to good decision making is evaluating the available information - the data - and combining it with your own estimates of pluses and minuses. As an economist, I do this every day.
A noble man compares and estimates himself by an idea which is higher than himself; and a mean man, by one lower than himself. The one produces aspiration; the other ambition, which is the way in which a vulgar man aspires.
Puerto Rico has a stray dog problem. Tens of thousands of homeless canines - hundreds of thousands, by some estimates - live and die on the streets and beaches all over this Caribbean island of almost four million people.
I don't want to talk about intelligence matters. I will say, however, that intelligence-community estimates should not become public in the way of this city and in the way of Congress.
But my estimates, for instance, based upon book information, were simply ridiculous, fanciful images of African attractions were soon dissipated, anticipated pleasures vanished, and all crude ideas began to resolve themselves into shape.
Estimates are that at least 70 per cent of all stars are accompanied by planets, and since the latter can occur in systems rather than as individuals (think of our own solar system), the number of planets in the Milky Way galaxy is of order one trillion.
By very conservative estimates, Turkish repression of Kurds in the 1990s falls in the category of Kosovo. It peaked in the early 1990s; one index is the flight of more than a million Kurds from the countryside to the unofficial Kurdish capital, Diyarbakir, from 1990 to 1994, as the Turkish army was devastating the countryside.
These are estimates that are done by the experts as to how much they expect we could get from the first lease sale that would take place in ANWR, and the estimate is about $2.5 billion.
We want to get 80%-85% of predictions right, not 100%. Or else we calibrated our estimates in the wrong way.
In the 1990s, Islamists in Algeria won elections like the Brotherhood did in Egypt. The Algerian military refused to allow the Islamists to take power. A war erupted, killing between 100,000 to 200,000 people, depending on which estimates are to be believed.